hello and welcome to hcm forum moshkiy13,
i would be glad to answer your query, as you said you have recently got your lower 2 teeth extracted, i hope you are on antibiotics following extraction,if not then kindly ask your
dentist to do so,
Inadequate mouth opening and swelling following extraction is due to the
local anesthesia, sometimes while injecting local anesthesia one of our oral muscles gets injured, do not worry the effect is temporary and will wear off soon, just follow a few steps;
1. visit your dentist(he/she will prescribe oral muscle relaxants),
2. warm and
cold compresses over the affected area(2-3times/day),
3. perform jaw exercises(open and close your mouth slowly),
4. war saline rinses(3-4times/day),
5. do not chew on hard stuff.
i hope i answered your query,
i wish you good health,
take care,